Fig. 2162. Fig. 2163. Fig. 2164.
When a heavy cut is to be taken the cape ([Fig. 2162]) chisel is used, first to carry through grooves or channels, such as shown in [Fig. 2176] at a, b, and c, the distance apart of these grooves being slightly less than the width of the flat chisel, whose cut is shown partly carried across at d in the figure. The width of a cape chisel should gradually decrease from a to b in [Fig. 2163], so that its side will be free in the groove it cuts, and the chisel head will be free to be moved sideways, and the direction of the groove may be governed thereby. If the chisel end be made parallel, as at c in [Fig. 2164], it will have no play in the groove and the head cannot be moved; hence if the groove is started out of line, as it is apt to be, it will continue so.
